M&C TechGroup DIL-1_(H) Operator's manual - Manual (Page 28)

28
Gas sampling and gas conditioning technology 2-1.1.7.6-ME
16.3 CHANGE AND CLEANING OF THE INJECTION NOZZLE
N O T E !
For cleaning the injector, it is not necessary to remove the nozzle out of the
crosspiece. The nozzle can be cleaned together with the complete cross-
piece in an ultrasonic bath.
For changing the injector nozzle, see figure 14:

Loosen nut 3 and remove jet pipe;

Push the injection nozzle out of the jet pipe side by using the mounting tools (item 8, figure 14);

Check the o-ring and change it if necessary;

Push the new nozzle with o-ring until blocking.
16.4 REMOVING THE BYPASS T-PIECE
For cleaning or changing the bypass injector, the bypass T-piece can be completely disassembled.
The following figure shows the bypass T-piece.
Injection nozzle O-ring Bypass T-piece
Jet pipe Nut 2 Nut 1 Nut 3
Sample gas
Dilution gas
Figure 15 Bypass T-piece with injection nozzle and o-ring
Dismantle the T-piece as follows:

Romove insulation cover if applicable;

Remove all tube connectors on the bypass-T. These are: (see figure 15):

- Bypass inlet union nut 1

- Union nut 2 (jet pipe side)

- Union nut 3 (sample inlet).

The bypass-T is now ready for further maintenance and repair.
16.5 CHANGE AND CLEANING OF THE BYPASS INJECTION NOZZLE AND CON-
TROL OR CHANGE OF THE O-RING

Push the injection nozzle out of the jet pipe side by using the mounting tools (item 8, figure 14);

Check the o-ring and change if necessary;

Push in the new or cleaned old nozzle with o-ring until blocking.